London, October 24 2017. Viewers admire Leonardo da Vinci's Salvator Mundi ('Saviour of the World') at a gallery preview at Christie's in London. The painting sold at Christie's in New York on 15 November 2017 for $450.3 million at Christie's New York, the highest price for any work of art. The painting is one of fewer than 20 known paintings by Leonardo, and the only one in private hands. © Paul Davey
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